_abc.py at 30e967e ⋅ aio-libs/multidict

import abc
from collections.abc import Mapping, MutableMapping


class _TypingMeta(abc.ABCMeta):
    # A fake metaclass to satisfy typing deps in runtime
    # basically MultiMapping[str] and other generic-like type instantiations
    # are emulated.
    # Note: real type hints are provided by __init__.pyi stub file
    def __getitem__(self, key):
        return self


class MultiMapping(Mapping, metaclass=_TypingMeta):
    @abc.abstractmethod
    def getall(self, key, default=None):
        raise KeyError

    @abc.abstractmethod
    def getone(self, key, default=None):
        raise KeyError


class MutableMultiMapping(MultiMapping, MutableMapping):
    @abc.abstractmethod
    def add(self, key, value):
        raise NotImplementedError

    @abc.abstractmethod
    def extend(self, *args, **kwargs):
        raise NotImplementedError

    @abc.abstractmethod
    def popone(self, key, default=None):
        raise KeyError

    @abc.abstractmethod
    def popall(self, key, default=None):
        raise KeyError

1	34	import abc
2	34	from collections.abc import Mapping, MutableMapping
3
4
5	34	class _TypingMeta(abc.ABCMeta):
6		# A fake metaclass to satisfy typing deps in runtime
7		# basically MultiMapping[str] and other generic-like type instantiations
8		# are emulated.
9		# Note: real type hints are provided by __init__.pyi stub file
10	34	def __getitem__(self, key):
11	34	return self
12
13
14	34	class MultiMapping(Mapping, metaclass=_TypingMeta):
15	34	@abc.abstractmethod
16	34	def getall(self, key, default=None):
17	34	raise KeyError
18
19	34	@abc.abstractmethod
20	34	def getone(self, key, default=None):
21	34	raise KeyError
22
23
24	34	class MutableMultiMapping(MultiMapping, MutableMapping):
25	34	@abc.abstractmethod
26	16	def add(self, key, value):
27	34	raise NotImplementedError
28
29	34	@abc.abstractmethod
30	16	def extend(self, args, *kwargs):
31	34	raise NotImplementedError
32
33	34	@abc.abstractmethod
34	34	def popone(self, key, default=None):
35	34	raise KeyError
36
37	34	@abc.abstractmethod
38	34	def popall(self, key, default=None):
39	34	raise KeyError

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